[Locke1689]

Where you looking for positions at military contractors or directly DoD work? If so, you should know that there are very strict laws on who can work in US military (and government) positions. Very often, you must be a US citizen to gain even lower level employment in sensitive military contracts. I know for a fact that not only do you have to have to be a natural American citizen (born in the United States), but you also have to have lived abroad only temporarily for a certain amount of time and lived consecutively in the US (for 10 years, I think?) to be eligible to earn the highest security clearances. Government work will probably remain the domain of US citizens, as very often its viewed as a national security risk otherwise.